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Over the years I have found it difficult to pass up a nice trilobite. Several were without identification or background information; I gambled that I would be able to identify these trilobites using information on the internet (images mostly). I am attaching images of those that I believe to be Devonian trilobites. I would most sincerely appreciate corrections and/or further species identification from those with more expertise. The first image is of a trilobite that I acquired at an antique store in Alaska that was liquidating an estate with a private museum. Through comparison with images on the internet, I have tentatively identified it as an Acanthopyge trilobite. The second image is of a partially entrolled trilobite that I have preliminarily identified as an Asteropyginae trilobite (through images on the internet). The third image is of a Crotocephalina gibbus trilobite from the Devonian in Alnif, Morocco. The fourth image is of a Gerastos trilobite from the Devonian in Zguid, Morocco. The fifth image is presumably a Metacantina trilobite from the Devonian in Morocco. The sixth image is presumably a Paralejurus trilobite from the Devonian in Morocco. The seventh image is presumably a Phacops trilobite from the Devonian. The eighth and final image is of a Proetus granulosus trilobite from the Devonian in Morocco. Any further information/discussion about these trilobites would be appreciated.

This important new paper from Allart Van Viersen and Gerry Kloc @GerryK should cause an indeterminable number of revised labels around the globe! Hollardops mesocristatus (Le Maître, 1952) has been restricted to the holotype from the Chefar el Ahmar Formation, Algeria. "The replacement of the unidentifiable name-bearing type of H. mesocristatus with the poorly preserved paratype of evenly imprecise geographic and stratigraphic provenance would be pointless. Therefore, we prefer to restrict H. mesocristatus to the holotype. This is a rigorous measure but one that enables the objective recognition of distinct species, albeit with the knowledge that one of these might potentially belong to H. mesocristatus when future collections at the type locality are conducted. Still, that would require the near-impossible identification of the specific bank that the holotype was extracted from as well as sufficient specimens to span a range of holaspid instars, in order to validate an unambiguous relationship with the type." This is the revised and updated list of the valid species from Morocco: Hollardops aithassainorum – Chatterton, Fortey, Brett, Gibb & McKellar, 2006 (lower Eifelian, Morocco) Hollardops angustifrons – Van Viersen & Kloc, 2022 (upper Emsian, Morocco) Hollardops boudibensis – Morzadec, 1997 (upper Emsian, Morocco) Hollardops burtandmimiae – (Lieberman & Kloc, 1997)(upper Emsian?, Morocco) Hollardops hyfinkeli (Lieberman & Kloc, 1997) (upper Emsian?, Morocco) Hollardops klugi – Van Viersen & Kloc, 2022 (lower Emsian, Morocco) Hollardops kyriarchos – Van Viersen & Kloc, 2022 (upper Emsian, Morocco) Hollardops luscus – Van Viersen & Kloc, 2022 (upper Emsian, Morocco) Hollardops multatuli – Van Viersen & Kloc, 2022 (upper Emsian, Morocco) Van Viersen, A.P., Kloc, G.J., 2022 Functional Morphology, Coaptation and Palaeoecology of Hollardops (Trilobita, Acastidae), With Descriptions of New Species and Two New Genera from the Devonian of Morocco. Geologica Belgica, 25(3-4):99-144 PDF LINK ************************************************************************************* Chatterton, B.D.E., Fortey, R.A., Brett, K.D., Gibb, S.L., McKellar, R.C. 2006 Trilobites from the Upper Lower to Middle Devonian Timrhanrhart Formation, Jbel Gara et Zguilma, Southern Morocco. Palaeontographica Canadiana, 25:1-177 PDF LINK Le Maître, D. 1952 La Faune du Dévonien Inférieur et Moyen de la Saoura et des Abords de l'Erg Djemel (Sud-Oranais). [The Fauna of the Lower and Middle Devonian Saoura and the Surroundings of Erg Djemel (South-Oran).] Materiaux pour la Carte Géologique de l'Algérie, 1re Série, Paléontologie, 12:1-170 Lieberman, B.S., Kloc, G.J. 1997 Evolutionary Biogeographic Patterns in the Asteropyginae (Trilobita, Devonian) Delo, 1935. American Museum of Natural History, Bulletin, 232:1-127 PDF LINK Morzadec, P. 1997 Les Trilobites Asteropyginae du Dévonien de l'Ougarta (Algérie). [Asteropyginae Trilobites from the Devonian of the Ougarta (Algeria).] Palaeontographica Abt.A, 244:143-158